Apparently a good mixture of herbs, but after the second month of using 3 caps/day, my skin was still full of zits, caused more than probably by an overloaded liver (I have Hep C and my liver enzymes have been acting funny lately).
I've started taking a herbal mixture prepared locally and my skin cleared within a week. To me that's proof the Natural Factors didn't do the job for me.
Next, I will try the Now Liver detox and regen.